Synopsis:

In 1994, an ‘alien’ species landed successfully on earth having crashed the first time around. Their plan was simple; disperse some of their young unknowingly into the human population and have some top ‘aliens’ explore and collect data on the people they have been studying distantly for many years.
Less than five years later, a specialized group, secretly formed by an FBI like group, were finally unleashed to try and sort the looming mess. It didn’t take long for the two groups to come to a compromise. The ‘aliens’ conducted a scheme, knowing the humans would not understand but also not question thoroughly enough to decline it.
With the use of a specially planned bred infant, one of a set of twins, they used the unique blood to form a barrier around the earth’s galaxy. The barrier kept the humans from further travel, and supposedly the ‘aliens’ from coming back. Little did the human group know that there were portals situated across the earth already.
As years passed, earth continued to be spied on. The infants had fit into society like any other adopted child, although, their original family kicked most of them out when they started acting ‘different.’ Luckily, an angel, who’d fallen from the second highest position, took on the task to re-enter ‘heaven’ by proving himself; little did he know the kids he took in would lead him to learn more about the real world.
He took in three kids, teaching them everything that’s happened and more about who they really were at the same time he was learning.
Their goal now was to find the missing twin so as to keep any further chaos from happening, but by seeking her out, the ‘aliens’ also found her.
It was the beginning of a secret tug-of-war.

(Yes, I realize that it sounds like two different stories, hehe)